Valve for inflation.



N0. 66U,|2 8. Patented 001. 23, I900.

F. L. SUWLE.

VALVE FOR INFLATION. (Application filed mar. 2, 19oo.)

(No Model.)

WITNESSES INVENTOR Z reoLe M03: 1:. Jamie fly ZM WAUOME] UNTTED STATESPATENT OFFICE.

FREDERICK L. SOWVLE, OF NEW BEDFORD, MASSACHUSETTS VALVE FOR INFLATION.

SPECIFICATION forming part of Letters Patent No. 660,128, dated October23, 1900.

Application filed March 2, 1900. Serial No. 7,101. (No model.)

To all whom it may concern:

Be it. known that I, FREDERICK L. SowLn, a citizen of the United States,residing at New Bedford, in the county of Bristol and State ofMassachusetts,have invented certain new and useful Improvements inValves for Inflation, of which the following is a specification,reference being had therein to the accompanying drawings. v

The invention has for its object the production of simple, reliable, andinexpensive devices to facilitate the inflation of articles,particularly pneumatic tires, the device consisting principally of twoparts, one being socured to the object to be inflated and the other acontroller adapted to be secured either to the first part or to theinflater.

This invention consists mainly in the peculiar means employed to adaptthe second or outer part to open and close the valve at the lower end ofthe first or inner part of the device when desired and to the ballcheckvalve located within the hollow plug of the lower valve above thelatter, as shown in the accompanying drawings, in which- Figure 1represents, on an enlarged scale, a longitudinal central section of theouter and inner parts of the device coupled together as during theprocess of inflation. Fig. 2 is a side view of the inner part of thedevice, showing the inner plug partly lifted from its seat, with theupper vent-hole open and exposed. Fig. 3 is a transverse section on lineas a; of Fig. 1, showing the square head of the plug-valve and thesquare socket therefor in the outer part of the device. Fig. 4=is a sideview of the plug-valve, all the figures being on an enlarged scale.

In said drawings, A represents the tubular casing of the outer part ofthe device, havingthe upper end of its periphery provided withserrations 1), adapted to be received and retained within one end of arubber hose leading to an air-pump.

The interior surface of the lower portion of the casing A isscrew-tapped, and above said portion said interior is of much smallersize and has a central perforation c of polygonal form, preferablysquare, to receive, guide, and control, as a watch-key, the correspond-.ing square head e of a valve-carrying plug E,

located within the inner part of the device.

The plug E is hollow and has two superposed chambers of differentdiameters. The upper chamberf is the narrowest and constitutes a passagefor the air used during inflation and has an opening f leading on theside into its upper end.

The lower chamber g has in its lower end an opening g leading from itsside into the interior of the tube H. Within the cylindrical chamber 9there is a ball 6, capable of moving freely therein, being'ofsmallerdiameter than the chamber g, but of larger diameter than the chamberf,and at the junction of said chambers there is a conical valve-seat k forthe ball t, which ball serves as a checkvalve for the device. The lowerend of the plug E is. screw-tapped internally and has in engagement withits screw-thread a metal disk Z, which closes the bottom of the chamberexcept its opening 9 above said disk. Bearing against the disk Z thereis in the bottom of the plug E a yielding washer c of leather or ofrubber, to rest upon the valve-' seat it within the bottom of thechamber of the tube H.

At the upper end of the square perforation c the interior of the casingA is preferably cylindrical at 0 as it is easier to drill a cylindricalpassage for the air but there is kept an air-passage between the squarehead e of the valve-plug and the walls of the square perforation c.

The inner part of the device consists of the tube H, the upper end ofwhich is screwthreaded externally with a right-hand thread to enter intoengagement with the screwtapped interior of the casing A, and theinterior of said tube H is screw-tapped with a left-hand thread toreceive the left hand thread of the plug E, so that when the outer part,having the casing A, is placed and rotated into engagement with theright-hand screw-thread of the inner part H its square perforation cengages the square head e of the plug E and rotates it toward the right;but said plug, having a left-hand. thread, causes it to be partly liftedand unscrewed from the tube H and lifts its washer e from contact withthe valve-seat h in the bottom of said tube, opening the device for thepassage of air from the air-pump. A similar result would be attained ifthe interior of the too casing had a left-hand thread and the plug E hada right-hand thread, being only a reversal of location of the right-handand lefthand threaded parts.

Having now fully described my invention, I claim 1. In a valve forinflation the combination of a tube havinga valve-seat in its lower endwith a casing engaging the upper end of said tube, and within said tubea partly-hollow screw-valve having an angular stem engaging in anangular perforation in said casing, the plug of the screw-valve havingtwo superposed chambers of different diameters and a valve-seat betweenthem, with a ball check valve in the widest chamber above the lowervalve substantially as described.

2. The combination of a casing having internally a polygonal sockeuwiththe tube H, having externally a screw-thread inclined in one directionand internally a screw-thread inclined in the opposite direction saidtube having a valve-seat in its lower end with a valve-plug E,externally screw-threaded to fit the interior screw-thread of the tubeH, said valve-plug having a polygonal head and internal chambers, with aball check-valve in the lower chamber above its lower closure and itsyielding washer substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

FREDERICK L. SOWLE. Titnesses:

CLIFFORD P. SHERMAN, FRANK A. MILLIKEN.

